Water-tube boiler



No. 752,630. PATENTBD PEB.16, 1904.

G. E. TURNER. WATER TUBE B'OILER.

IWITNESSES:

No. atacan.

, UNITED ySTATES batented February 16, 1904.

PATENT OFFICE.

GEORGE E. TURNER, OF BUCYRUS, OHIO, ASSIGNOR TO STIRLING COMPANY, OFCHICAGO, ILLINOIS.

WATER-TUBE BOILER.

SPECIFICATION forming part of Letters Patent No. 752,630, dated February16, 1904.

Application filed August 11, 1902. Serial No. 119,235. (No model.)

To a/ZZ whom/ it 17'1//1/,7/ concern:

Be it known that I, GEORGE E. TURNER, a citizen of .the United States,residing at Bueyrus, in the county of Crawford and State of Ohio, haveinvented certain new and useful Improvements in Water-Tube Boilers; andI do declare the following to be a clear, full, and exact description ofthe invention, such as will enable others skilled in the art to which itappertains to make and use the same.

In the construction of water-tube steamboilers one of the familiardiiculties encountered is in providing effective connections between thewater-tubes and the steam-drums and the mud-drums. It is found inpractice that the drums are weakened by the numerous holes cut in theirwalls to receive the ends of the water-tubes, and that owing to thethinness of the walls of the drums at these points it is diicult to forma satisfactory joint by expanding the ends of the tubes in place. Tomeet this difficulty, many complicated and expensive devices have beenresorted to, It has been .proposed by steam-boiler designers to thickenthe metal of the drums at one side in a plane flat surface and to thuspermit the use of straight tubes of uniform length; but in practice thishas not been found feasible, for the reason that the drums are undulyweakened by a departure from the curved cross-section.

My invention relates to and its object is to provide cheap and simplemeans for overcoming the objection here indicated; also, to provide anarrangement of steam-drums, muddrums, and water-tubes which will furnisha simple, effective, and durable, as well as an economical andconvenient, water-tube steamboiler. I attain these objects by means ofthe devices, construction, and arrangement of parts hereinafterdescribed, and shown and illustrated in the single ligure of theaccompanying drawing, which is a vertical longitudinal sectionalelevation of my boiler.

In the drawing, l and 2 are a pair of steam and water drums, the drum 1being hereinafter designated as the front.upper drum and 2 as the rearupper drum.

3 and 4. are mud-drums disposed below the drums 1 and 2. 3 will behereinafter designated as the front mud-drum and 4: as the rearmud-drum.

The front upper drum and the front muddrum are connected by a series orbank of tubes 5. The rear upper drum and the'rear mud-drum are connectedby a series or bank ,of tubes 6. The rear upper drum and the frontmud-drum are connected by a series or bank of tubes 7. The steam-spacesof the two upper drums are connected by steam-pipes 8,

andthe water-spaces of these two drums are connected by water-pipes 9.The two muddrums are not directly connected with each other. This boilerthus arranged is provided with the usual feed water and steam pipes,steam-gages, and the like and is mounted after the usual manner of thisclass of boilers in settings of masonry. The furnace' is in front of thefront bank of tubes 5, near its bottom. At the rear of the bank of tubes5, extending from the front mud drum upwardly nearly to the front upperdrum, is a baffle-plate 10, which is interposed between the banks oftubes 5 and 7. Another baiiieplate l1 extends downwardly from the rearupperdrum nearly to the rear mud-drum.

The course of the heated gases from the furnace is upwardly in front ofthe baiiie-plate 10, thence downwardly between the baffleplates 10 and1l', thence upwardly in the rear of baffle-plate 11, and out through thestack. The general circulation of the water in my boiler is as follows:From the front mud-drum up through tubes 5 to the front upper drum,thence through tubes 9 to the rear upper drum, thence down through tubes7 to the front muddrum. In addition to this circulation there aresecondary and independent currents up and down in the tubes 6 betweenthe rear upper drum and the rear mud-drum.

The walls of the portions of the drums which receive the ends of thewater-tubes are thickened longitudinally to a greater thickness than theremainder of the drum. The interior and exterior surfaces of thethickened portionsi are curved in the direction of the circumference ofthe drums. It will be seen that the access of metal in the walls of thedrumswhere numerous holes are bored to receivethe tubes greatlystrengthens the drums at this point, provides for greater area ofcontact, and insures a stronger and tighter joint than is obtainablewith thinner metal.

Having described my invention, what I claim, and desire to secure byLetters Patent, 1s-

1. A water-tube boiler comprising two elevated Steam and water drums, apipe connecting the steam-spaces of the two elevated steam and waterdrums, a pipe conneeting thewaterspaces of the two elevated steam andwater drums, two lower mud-drums, a series of tubes connecting the frontlower mud-drum with the front elevated steam and water drum, a series oftubes connecting the rear lower mud-drum with the rear elevated steamand water drum, and a row of tubes connecting the front lower mud-drumwith the rear elevated steam and water drum, substantially as described.

2. A water-tube boiler comprising two elevated steam and waten drums, apipe connecting the steam-spaces of the two elevated steam and waterdrums, a pipe connecting the waterspaces of the two elevated steam andwater drums, two lower mud-drums, a series of tubes connecting the frontlower mud-drum with the front elevated steam and water drum, a series oftubes connecting the rear lower mud-drum with the rear elevated steamand water drum, a row of tubes connecting the front lower muddrum withthe rear elevated steam and water drum, and a row of tubes connectingthe lower mud-drum and the rear elevated steam and water drum,substantially as described.

3. A water-tube'boiler comprising, two elevated steam and water drums, apipe connecting the steam-spaces of the two elevated steam and waterdrums, a pipe connecting the waterspaces of the two elevated steamoandwater drums, two lower mud-drums, a series of tubes connecting the frontlower mud-drum with the front elevated steam and water drum.l a seriesof tubes connecting' the rear lower muddrum with the rear elevated steamand water drum, a row of tubes connecting the front lower mud-drum withthe rear elevated steam and water drum, and a baffle-plate locatedbetween the series of tubes connecting the front lower mud-drum and thefront elevated steam and water drum and the row of tubes connect- ,ingthe front lower mud-drum with the rear elevated steam and water drum andextending upwardly from the front lower mud-drum, substantially asdescribed.

4. A water-tube boiler comprising two elevated steam and water drums, apipe connecting the steam-spaces of the two elevated steam and waterdrums, a pipe connecting the waterspaces of the two elevated steam andwater drums, two lower mud-drums, a series of tubes connecting the frontlower mud-drum with the front elevated steam and water drum, a series oftubes connecting the rear lower muddrum with the rear elevated Steam andwater drum, a row of tubes connecting the front lower mud-drum with therear elevated steam and water drum, a row of tubes connecting the lowermud-drum and the rear elevated steam and water drum, and a baffle-platebetween the series oi' tubes and the row of tubes connecting the rearlower mud-drum with the rear elevated steam and water drum and dependingfrom the rear elevated steam and water drum, substantially as described.

5. A water-tube boiler comprising two elevated steam and water drums, apipe connecting the steam-spaces of the two elevated steam and waterdrums, a pipe connecting the waterspaces of the two elevated steam andwater drums, two lower mud-drums, a series of tubes connecting the frontlower mud-drum with the front elevated steam and water drum, a series oftubes connecting the rear lower muddrum with the rear elevated steam andwater drum, a row of tubes connecting the front lower mud-drum with therear elevated steam and water drum, a row of tubes connecting the lowermud-drum and the rear elevated steam and. water drum, a baffle-platebetween the series of tubes connecting the front lower mud-drum with thefront elevated steam and water drum and the row of tubes connecting thefront lower mud-drum with the rear elevated steam and water drum, andextending upwardly from the front lower mud-drum, and a battle-platebetween the series oi' tubes and the'row of tubes connecting the rearlower mud-drum and the rear elevated steam and water drum and extendingdownwardly from the rear elevated steam and water drum, substantially asdescribed.

GEC). E. TURNER.

In presence of- THOMAS BEER, O. E. MONNETTE.

IOO

